The world today awaits a famous royal event: the marriage of Queen Elizabeth II's grandson Prince Harry to the American Meghan Markle in a huge ceremony to be held at St George's Chapel, Windsor Castle. Over the decades, the British Royal family has been famous for its marriages, such as that of Prince Edward when he relinquished the throne to marry American Alice Sampson because she was divorced, Queen Elizabeth II and Prince Philip Duke of Edinburgh, and Prince Charles to Lady Diana Spencer.